-How long did you do your homework?-___________.A.Before it struck 10.B.Since supper time.C.So long as i stayed up.D.Until 10 o'clock.AB能排除,解释下CD,都解释当然不反对

How long did you Spend (do) your homeHow long did you Spend (do) your homework How long did you spend ---(do)sport yesterday? How long B do you suppose it lasted C,did you suppose it last How did you do that?How did you do that? Where did you go?When did you go?How did you get there?How long did you spend there?Where did you go?When did you go?How did you get there?How long did you spend there?What did you do or see?What was it like?以这些问题写一篇关于过去暑假 How long ago did you start school? how,spend,did,there,long,you(?) How long did you stay there? how long did you ____ it how long did you stay in Beijing? homework your did it you do long to yesterday take how连词成句 ____（how long/when）did you do your homework last night?Until half past ten. how long did you spend to do homework这句话正确吗? Do you remember____in Paris last year?A.how long have you stayed B.how long did you stayC.how long you stayed D.how long you have stayedDo you remember____in Paris last year?For only three months.A.how long have you stayed B.how long did you stayC.ho how long did you stay there?能否改为 how long did you stay at there? How long did it take him to do homework Do you know?（合并为一句） How long did it take you to do your homework yesterday evening?（改为同义句） How long did you _How long did it take you to do your homework yesterday evening?（改为同义句）How long did you _ _ your homework yesterday evening? how long did you stay here how often do his parents let him watch TV?where do they come from 这些句子中的do 是什么用法?